2022 ICD-10-CM Diagnosis Code D01.1

Carcinoma in situ of rectosigmoid junction

    2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
  • D01.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2022 edition of ICD-10-CM D01.1 became effective on October 1, 2021.
  • This is the American ICD-10-CM version of D01.1 - other international versions of ICD-10 D01.1 may differ.
The following code(s) above D01.1 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to D01.1:
  • C00-D49
    2022 ICD-10-CM Range C00-D49


    • Functional activity
    • All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
    • Morphology [Histology]
    • Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
    • Primary malignant neoplasms overlapping site boundaries
    • A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
    • Malignant neoplasm of ectopic tissue
    • Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).
  • D00-D09
    2022 ICD-10-CM Range D00-D09

    In situ neoplasms

    • Bowen's disease
    • erythroplasia
    • grade III intraepithelial neoplasia
    • Queyrat's erythroplasia
    In situ neoplasms
  • D01
    ICD-10-CM Diagnosis Code D01

    Carcinoma in situ of other and unspecified digestive organs

      2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
    Type 1 Excludes
    Carcinoma in situ of other and unspecified digestive organs
Approximate Synonyms
  • Carcinoma in situ, rectosigmoid junction
ICD-10-CM D01.1 is grouped within Diagnostic Related Group(s) (MS-DRG v39.0):
  • 374 Digestive malignancy with mcc
  • 375 Digestive malignancy with cc
  • 376 Digestive malignancy without cc/mcc

Convert D01.1 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
Code annotations containing back-references to D01.1:
  • Type 1 Excludes: D01.0
    ICD-10-CM Diagnosis Code D01.0

    Carcinoma in situ of colon

      2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    Type 1 Excludes
    • carcinoma in situ of rectosigmoid junction (D01.1)
ICD-10-CM Codes Adjacent To D01.1
D00.03 Carcinoma in situ of gingiva and edentulous alveolar ridge
D00.04 Carcinoma in situ of soft palate
D00.05 Carcinoma in situ of hard palate
D00.06 Carcinoma in situ of floor of mouth
D00.07 Carcinoma in situ of tongue
D00.08 Carcinoma in situ of pharynx
D00.1 Carcinoma in situ of esophagus
D00.2 Carcinoma in situ of stomach
D01 Carcinoma in situ of other and unspecified digestive organs
D01.0 Carcinoma in situ of colon
D01.1 Carcinoma in situ of rectosigmoid junction
D01.2 Carcinoma in situ of rectum
D01.3 Carcinoma in situ of anus and anal canal
D01.4 Carcinoma in situ of other and unspecified parts of intestine
D01.40 Carcinoma in situ of unspecified part of intestine
D01.49 Carcinoma in situ of other parts of intestine
D01.5 Carcinoma in situ of liver, gallbladder and bile ducts
D01.7 Carcinoma in situ of other specified digestive organs
D01.9 Carcinoma in situ of digestive organ, unspecified
D02 Carcinoma in situ of middle ear and respiratory system
D02.0 Carcinoma in situ of larynx

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.